28192566020 has 48 divisors (see below), whose sum is σ = 61842711168. Its totient is φ = 10775508480.

The previous prime is 28192566013. The next prime is 28192566023. The reversal of 28192566020 is 2066529182.

It is not an unprimeable number, because it can be changed into a prime (28192566023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418055 + ... + 480785.

It is an arithmetic number, because the mean of its divisors is an integer number (1288389816).

Almost surely, 2^28192566020 is an apocalyptic number.

28192566020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28192566020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30921355584).

28192566020 is an abundant number, since it is smaller than the sum of its proper divisors (33650145148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28192566020 is a wasteful number, since it uses less digits than its factorization.

28192566020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63740 (or 63738 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 28192566020 in words is "twenty-eight billion, one hundred ninety-two million, five hundred sixty-six thousand, twenty".